18(5 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Group 5. Wing, over 15 inches long. 



Bill, black; general plumage, tawny black and white; horu-likc tufts of 

 feathers over the eyes. 



Great Horned Owl. 



Bubo virginianus, and races. 

 See No. 309. 



Bill, black; general plumage, white, usually more or less marked with slate 

 brown, or dark brown ; no horn-like tufts of feathers over the eyes. 



Snowy Owl. 



Ntjctea nyctea. 

 See Xo. 312. 



Bill, yellowish ; no horn-like tufts of feathers over eyes ; general plumage, gray 

 mixed with white and dark brown. 



Great Gray Owl. 



Scotiaptex cinerca. 

 See No. 304. 



Great Gray Owl. 



Great Horned Owl. 



